#include <iostream>
#include <string>

using namespace std;

long long operator "" _k(unsigned long long t)      //数字乘以1000
{
    return 1000*t;
}

string operator "" _add_prefix(const char * p, size_t)     //处理字符串
{
    return string("Tom say:") + p;
}

int main()
{
    cout << 10_k <<endl; 
    cout << "hello world"_add_prefix << endl;
}